Dynamic transition in driven vortices across the peak effect in superconductors

Details Dynamic transition in driven vortices across the peak effect in superconductors Dynamic transition in driven vortices across the peak effect in superconductors

2003-03-16

arxiv.org/abs/cond-mat/0303295v1

Phys. Rev. B 67(5), 052507 (2003)

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.67.052507

We study the zero-temperature dynamic transition from the disordered flow to an ordered flow state in driven vortices in type-II superconductors. The transition current $I_{p}$ is marked by a sharp kink in the $V(I)$ characteristic with a concomitant large increase in the defect concentration. On increasing magnetic field $B$, the $I_{p}(B)$ follows the behaviour of the critical current $I_{c}(B)$. Specifically, in the peak effect regime $I_{p}(B)$ increases rapidly along with $I_{c}$. We also discuss the effect of varying disorder strength on $I_{p}$.

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